With appropriate care it was possible to obtain a reproducible curvature in immature sheep. The methods described are suitable for use in studies of growth modulation and other spinal devices.

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We report the case of a 13-year-old obese child presenting with bilateral stable slipped capital femoral epiphyses, which were managed by percutaneous single screw fixation in situ under image intensifier control using arthrography.

The Wallis implant is generally implanted without complication when used as an adjunct to decompression with a good medium term survival. Though disc heights were maintained, the Wallis spacer did not however appear to reduce the incidence of recurrent spinal or foraminal stenosis from that expected from decompression alone.

The purpose of the study was to optimize postoperative comfort in lambs anaesthetized for the surgical creation of scoliosis while maintaining the ewe-lamb relationship to miminize rejection rates. The first management plan produced six scoliotic lambs but intraoperative hypoventilation and hypovolaemia followed by postoperative dyspnoea, pain, monitoring and nursing difficulties, hypothermia, hypoglycaemia and tympany were encountered. Three of eight lambs (38%) were rejected by their ewes. Perioperative management was amended which, combined with improved surgical technique, produced 16 scoliotic lambs. The lambs recovered more rapidly (mean time to standing after discontinuation of anaesthesia was reduced from 12 h to 70 min) and appeared to be more comfortable. No rejections occurred after the refinements were implemented.

In the un-tethered animals the effect of the implant was to create a scoliotic deformity and in the tethered to improve deformity while maintaining spinal motion. We believe that the results are promising and that devices of similar construct may be of use in children with scoliosis, potentially changing current methods of clinical care.

out fall), petit mal (with fall but no marked convulsions), and grand mal with all the events of a particularly severe major epileptic attack. In January there was a total of 844 attacks-401 "light," 424 "hard," and 19 "convulsions." For the following months to the time I finally had withdrawn the bromid by gradual reduction the total monthly number of attacks varied from 530 to 1,012, the ratio of the three vari¬ eties being about as above indicated. Following the with¬ drawal of the bromid the usual change from numerous light to fewer severe attacks took place as shown by a monthly total of 35 to 118, and of these grand mal seizures numbered 34 to 73 a month. June 3, 1907, the treatment under special con¬ sideration was begun, and the record shows 18 attacks, all grand mal, for this month, none for July, 72 grand mal in August, 6 in September, and from Sept. 7, 1907, to the present writing, June 30, 1909, no further epileptic attacks. Mental Condition.-The normal mental growth at the outset of the epilepsy ceased abruptly, and retrogression began which,